Very unique idea, super fun to draw things to the sky! Got 5 stars for my first drawing, then the next was 2 stars, oops.
One piece of feedback I could give could be that if the plane were to hit any obstacles etc. (like the ground) it could blow up in a satisfying animation! It might not be suitable for the intentional game play loop maybe, but I intuitiviely expected something to happen if I touched the ground.
Super cool entry, well made 👏